This is very likely a driver bug or something. I have the MSI Gaming X Trio 3090 and I have managed to flip both power and thermal limits to yes by simply alt-tabbing in and out of Guild Wars 2 and believe me, Guild Wars 2 is DEFINITELY not pushing this card anywhere near thermals or power limits. My card's GPU core doesn't even go above 54°C while playing it, memory junction hovers around 62°C ~ 64°C and hot spot temp around 65°C give or take. Power is usually around 200W ~ 220W with a limit of 380W. I also read in other places that games which use Vulkan or DX12 can also cause this to happen when you alt-tab out of them, but Guild Wars 2 is DX9 so it doesn't seem like it is limited to just those two graphics APIs.
EDIT: Adding image. This time I even got max operating voltage to flip too, even though my GPU is slightly undervolted. Yes, with Guild Wars 2 and alt-tabbing in and out of it.